(:*******************************************************:)
(: Test: K2-BaseURIFunc-4                                :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:21+01:00                       :)
(: Purpose: Invoke on a processing instruction node.     :)
(:*******************************************************:)
empty(document-uri(processing-instruction name {123}))